package com.wc5818.common;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.Base64;
import java.util.List;
import java.util.Map;


public class HttpXmlClient {
	/*
	 * get请求获取toker值
	 * */
	public static String sendGet(String url, String param){
		String result = "";
		BufferedReader in = null;
		String urlNameString = url;
		try {
			URL realUrl = new URL(urlNameString);
			URLConnection connection = realUrl.openConnection();
			connection.setRequestProperty("accept", "*/*");
			connection.setRequestProperty("connection", "Keep-Alive");
			connection.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			// 建立实际的连接
			connection.connect();
			// 获取所有响应头字段
			Map<String, List<String>> map = connection.getHeaderFields();
			// 遍历所有的响应头字段
			for (String key : map.keySet()) {
				System.out.println(key + "--->" + map.get(key));
			}
			// 定义 BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(connection.getInputStream()));

			System.out.println(in);
			
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		finally {
			try {
				if (in != null) {
					in.close();
				}
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		} 
		return result;
	}

	/*
	 * post请求返回base64的图片数据
	 * */
	//
	public static String sendPost3(String url) {    
		PrintWriter out = null;
		String result = "";
		InputStream inputStream=null;
		//请求数据，自行拼接
		String param="{ \"scene\":\"19014\" ,\"page\":\"pages/mine/pages/regiest/regiest\",\"width\":430}";
        try {
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			URLConnection conn = realUrl.openConnection();
			// 设置通用的请求属性
//			conn.setRequestProperty("accept", "*/*");
//			conn.setRequestProperty("connection", "Keep-Alive");
//			conn.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
//			conn.setCharacterEncoding("gbk");
			conn.setRequestProperty("Content-Type", "application/json;charset-gbk");
			conn.setRequestProperty("responseType", "arraybuffer");
			
			// 发送POST请求必须设置如下两行
			conn.setDoOutput(true);
			conn.setDoInput(true);
			// 获取URLConnection对象对应的输出流
			out = new PrintWriter(conn.getOutputStream());
			// 发送请求参数
			out.print(param);
			// flush输出流的缓冲
			out.flush();     
			//获取流数据
			inputStream = conn.getInputStream();
			
			
			// 将获取流转为base64格式
			byte[] data = null;
			ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
			byte[] buff = new byte[100];
			int rc = 0;
			while ((rc = inputStream.read(buff, 0, 100)) > 0) {
				swapStream.write(buff, 0, rc);
			}
			data = swapStream.toByteArray();
			
			result = new String(Base64.getEncoder().encode(data));
//			当import java.util.Base64;无法导入时，只能在网上找找其他的jar包，写法换成下面这种
//			result = new String(Base64.encodeBase64(data));
			
			
        }catch (Exception e) {
			System.out.println("发送 POST 请求出现异常！"+e);
			e.printStackTrace();
		}
			//使用finally块来关闭输出流、输入流
		finally{
			try{
				if(out!=null){
					out.close();
				}
				if(inputStream!=null){
					inputStream.close();
				}
				
			}
			catch(IOException ex){
				ex.printStackTrace();
			}
		}
        return result;
	}
	
} 